    // 简单的签到功能
    document.getElementById('checkin-btn').addEventListener('click', function() {
        const btn = this;
        const pointsDisplay = document.getElementById('points-display');
        let currentPoints = parseInt(pointsDisplay.textContent.replace(',', ''));
        
        if (!btn.classList.contains('disabled')) {
            // 模拟签到成功
            btn.innerHTML = '<i class="fas fa-check"></i> 已签到';
            btn.classList.add('disabled');
            
            // 增加积分
            currentPoints += 50;
            pointsDisplay.textContent = currentPoints.toLocaleString();
            
            // 显示提示
            alert('签到成功！获得50积分');
        }
    })